green roof;
building energy performance;
thermal comfort;
simulation;
global sensitivity analysis;
D O I:
10.3390/buildings5020497
中图分类号:
TU [建筑科学];
学科分类号:
0813 ;
摘要:
Green roofs improve building energy performance and constitute an alternative to sustainable buildings. A green roof model is dynamically coupled with a building thermal model to assess its energy performance that takes into account the indoor air temperature dynamic changes. Under the climate conditions in Antananarivo, we compared green and conventional roofs. The present study shows that green roofs protect the roof structure under extreme temperature and large temperature fluctuations. For the case of Antananarivo, the amplitude of the temperature fluctuations at the top face of the support is reduced by 28 degrees C when using green roof. The impact of the green roof on indoor air temperature and energy demand is investigated. The vegetation decreases the maximum indoor air temperature and improves the building thermal comfort during summer days. It has no effect on the minimum indoor air temperature, but additional soil thickness can increase it. In addition, a global sensitivity analysis, which is carried out on the proposed model without considering any specific weather data, allows us to identify the most influential parameters on the energy demand. It has been found that green roofs have almost insignificant thermal impact in insulated buildings; however, their potential prevails over the building envelope and weather characteristics in the case of non-insulated building.
机构:
La Rochelle Univ, Civil Engn Dept, LaSIE, UMR 7356,CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
Univ Balamand, Dept Chem Engn, Amioun Koura POB 33, Balamand, LebanonLa Rochelle Univ, Civil Engn Dept, LaSIE, UMR 7356,CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
Nasr, Yara
El Zakhem, Henri
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Univ Balamand, Dept Chem Engn, Amioun Koura POB 33, Balamand, LebanonLa Rochelle Univ, Civil Engn Dept, LaSIE, UMR 7356,CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
El Zakhem, Henri
Hamami, Ameur El Amine
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La Rochelle Univ, Civil Engn Dept, LaSIE, UMR 7356,CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, FranceLa Rochelle Univ, Civil Engn Dept, LaSIE, UMR 7356,CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
Hamami, Ameur El Amine
El Bachawati, Makram
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Univ Balamand, Dept Chem Engn, Amioun Koura POB 33, Balamand, LebanonLa Rochelle Univ, Civil Engn Dept, LaSIE, UMR 7356,CNRS, Ave Michel Crepeau, F-17042 La Rochelle 1, France
机构:
Swinburne Univ Technol, Sch Sci Comp & Engn Technol, Siemens Swinburne Energy Transit Hub, Melbourne, Vic 3122, AustraliaVictoria Univ, Coll Sport Hlth & Engn, Melbourne, Vic 3011, Australia
Thirunavukkarasu, Gokul
Abuseif, Majed
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机构:
Univ Sunshine Coast, Sch Law & Soc, Sunshine Coast, Qld 4556, Australia
Griffith Univ, Cities Res Inst, Green Infrastruct Res Labs GIRLS, Gold Coast, Qld 4215, AustraliaVictoria Univ, Coll Sport Hlth & Engn, Melbourne, Vic 3011, Australia
Abuseif, Majed
Seyedmahmoudian, Mehdi
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Swinburne Univ Technol, Sch Sci Comp & Engn Technol, Siemens Swinburne Energy Transit Hub, Melbourne, Vic 3122, AustraliaVictoria Univ, Coll Sport Hlth & Engn, Melbourne, Vic 3011, Australia
Seyedmahmoudian, Mehdi
Mekhilef, Saad
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Swinburne Univ Technol, Sch Sci Comp & Engn Technol, Siemens Swinburne Energy Transit Hub, Melbourne, Vic 3122, AustraliaVictoria Univ, Coll Sport Hlth & Engn, Melbourne, Vic 3011, Australia
Mekhilef, Saad
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机构:
Stojcevski, Alex
Chau, Hing-Wah
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Victoria Univ, Coll Sport Hlth & Engn, Melbourne, Vic 3011, Australia
Victoria Univ, Inst Sustainable Ind & Liveable Cities, Melbourne, Vic 3011, AustraliaVictoria Univ, Coll Sport Hlth & Engn, Melbourne, Vic 3011, Australia